An upgraded Mask of Sliske - when worn in the head slot or carried in the pocket slot during combat, it will occasionally spawn an undead archer, who'll deal damage to your current target before dissipating.

There are four chests within Zamorak's hideout, three of which contain an experience lamp which can be used on any skill. To go to the hideout use the communication device. The chests do not require elite skills (e.g. Invention) to open.

The first chest contains an XP lamp (tier 1) with 7,000 experience, and requires level 50 in all skills to obtain (south side, along the east wall right before the wall slants diagonally).

The second chest contains an experience XP lamp (tier 2) with 50,000 experience, and requires level 70 in all skills to obtain (east side, in front of the northern lava pit).

The third chest contains an XP lamp (tier 3) with 96,000 experience, and requires level 90 in all skills to obtain (behind Zamorak's throne).